1998 PONTIAC GRAND PRIX maintenance

Air Cleaner
To check or replace the air cleaner filter:
1. Loosen the wing nut on
the air duct.
2. Lift up on the two clips
located
on top of the
filter cover.
3. Disconnect the duct and reposition it while removing
4. Pull out the filter. Be sure to install the air filter and
install the cover tightly when you are finished. the side cover.
Refer to the Maintenance Schedule to determine when
to
replace the air filter.
See “Scheduled Maintenance Services” in the Index.
I A CAUTION:
Operating the engine with the air cleaner off can
cause you
or others to be burned. The air cleaner
not
only cleans the air, it stops flame if the engine
backfires.
If it isn’t there, and the engine
backfires, you could be burned. Don’t drive with
it
off, and be careful working on the engine with
the air cleaner
off.
I NOTICE:
If the air cleaner is off, a backfire can cause a
damaging engine fire. And,
dirt can easily get
into your engine, which will damage it. Always
have the
air cleaner in place when you’re driving.
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Supercharger Oil
Unless you are technically qualified and have the proper
tools,
you should let your dealer or a qualified service
center perform this maintenance.
When to Check
Check oil level every 30,000 miles (50 000 km) or every
36 months, whichever occurs first.
What Kind of Oil to Use
See “Recommended Fluids and Lubricants” in the Index
and use only the recommended oil,
How to Check and Add Oil
Check oil only when the engine is cold. Allow the
engine to cool two to
three hours after running.
A CAUTION:
If you remove the supercharger oil fill plug while
the engine is hot, pressure may cause hot
oil to
blow out
of the oil fill hole. You may be burned.
Do not remove the plug until the engine cools.
1. Clean the area around the oil fill plug before
2. Remove the oil fill plug using a 3/16 inch
3. The oil level is correct when it just reaches the
bottom
of the threads of the inspection hole.
removing
it.
Allen wrench.
4. Replace the oil plug with the O-ring in place. Torque
to
88 lb-in (10 N-m).
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Automatic Transaxle Fluid
When to Check and Change
A good time to check your automatic transaxle fluid
level is when the engine oil is changed.
Change both the fluid and filter every
50,000 miles
(83 000 km) if the vehicle is mainly driven under one or
more of these conditions:
0 In heavy city traffic where the outside temperature
In hilly or mountainous terrain.
regularly reaches
90” F (32 O C) or higher.
0 When doing frequent trailer towing.
0 Uses such as found in taxi, police or delivery service.
If you do not use
your vehicle under any of these
conditions, the fluid and filter
do not require changing.
See “Scheduled Maintenance Services” in the Index.
How to Check
Because this operation can be a little difficult, you may
choose to have
this done at your Pontiac dealership
Service Department.
If you do
it yourself, be sure to follow all the
instructions here, or you could get a false reading on
the dipstick.
NOTICE:
Too much or too little fluid can damage your
transaxle.
Too much can mean that some of the
fluid could come out and fall on
hot engine parts
or exhaust system parts, starting a fire. Be sure to get an accurate reading if you check your
transaxle fluid.
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How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transaxle fluid to use. See “Recommended
Fluids and Lubricants” in the Index.
If the fluid level is low, add only enough of the proper
fluid to bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough fluid at the
dipstick hole to bring it to the proper level.
It doesn’t take much fluid, generally less
than one
pint
(0.5 L). Don’t ovefill.
LOTICE:
We recommend you use only fluid labeled
DEXRON@-111, because fluid with that label
is
made especially for your automatic transaxle.
Damage caused
by fluid other than DEXRON-III
is not covered by your new vehicle warranty.
3. After adding fluid, recheck the fluid level as described
4. When the correct fluid level is obtained, push the
under “How to Check” earlier in this section.
dipstick back in
all the way.
Engine Coolant
The cooling s stem in your vehicle is filled with
DEX-COOL engine coolant. This coolant is designed
to remain
in your vehicle for 5 years or 150,000 miles
(240 000 km) whichever occurs first, if you add only
DEX-COOL’ extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating
or if you need to add coolant to your
radiator, see “Engine Overheating” in the Index.
A 50/50 mixture of water and DEX-COOL’
coolant will:
0 Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265 OF (129°C).
J
e Protect against rust and corrosion.
e Help keep the proper engine temperature.
0 Let the warning lights and gages work as
they should.
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Some driving conditions or climates may cause a brake
squeal when the brakes are first applied or lightly
applied.
This does not mean something is wrong with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly torque wheel nuts in the
proper sequence to GM specifications.
Brake linings should always be replaced as complete
axle sets.
See “Brake System Inspection” in Section
7 of
this manual under Part C “Periodic
Maintenance Inspections.”
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or
if there is a rapid increase in pedal
travel.
This could be a sign of brake trouble.
Brake Adjustment
Every time you apply the brakes, with or without the
vehicle moving, your brakes adjust for wear.
Replacing Brake System Parts
The braking system on a modem vehicle is complex. Its
many parts have to
be of top quality and work well
together
if the vehicle is to have really good braking.
Your vehicle was designed and tested with top-quality
GM brake parts.
When you replace parts of your braking
system
-- for example, when your brake linings wear
down and you have to have new ones put in
-- be sure
you get new approved GM replacement parts. If you
don’t, your brakes
may no longer work properly. For
example, if someone puts in brake linings that are wrong
for your vehicle, the balance between your front and
rear brakes can change
-- for the worse. The braking
performance you’ve
come to expect can change in many
other ways if someone puts in the wrong replacement
brake parts.
Battery
Every new Pontiac has an ACDelco Freedom@ battery.
You never have to add water to one of these. When it’s
time for a
new battery, we recommend an ACDelco
Freedom battery. Get one that has the replacement
number shown on the original battery’s label.
6-36

Windshield Wiper Blade Replacement
1. Pull the windshield wiper arm away from
the windshield.
2. Lift the release clip with a screwdriver and pull the
3. Push the new wiper blade securely onto the
For wiper blade replacement length and type, see
“Normal Maintenance Replacement Parts” in the Index.
blade
off the wiper arm.
wiper arm.
Tires
Your new vehicle comes with high-quality
tires made by
a leading tire manufacturer. If you ever have questions
about
your tire warranty and where to obtain service, see
your Pontiac
Warranty booklet for details.
1
‘
A CAUTION:
3
Poorly maintained and improperly used tires
are dangerous.
0 Overloading your tires can cause
overheating as a result of too much friction.
You could have an air-out and a serious
accident. See “Loading Your Vehicle” in
the Index.
CAUTION: (Continued)
6-44

When to Check
Check your tires once a month or more.
Don’t forget your compact spare
tire. It should be at
60 psi (420 Pa).
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell
if your tires are properly inflated
simply by looking at them. Radial tires
may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems. They help prevent leaks
by keeping out dirt
and moisture.
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km). Any time you notice unusual
wear, rotate your tires as soon as possible and check
wheel alignment.
Also check for damaged tires or
wheels. See “When It’s Time for New Tires” and
“Wheel Replacement” later
in this section for
more information. The purpose
of regular rotation
is to achieve more
uniform wear for
all tires on the vehicle. The first
rotation is the most important. See “Scheduled
Maintenance Services”
in the Index for scheduled
rotation intervals.
I I
I When rotating your tires, always use the correct rotation
pattern shown here.
Don’t include the compact spare tire
in your
tire rotation.
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Underbody Maintenance
Chemicals used for ice and snow removal and dust .
control can collect on the underbody. If these are not
removed, accelerated corrosion (rust)
can occur on
the underbody parts such as fuel lines, frame, floor
pan and exhaust system even though they have
corrosion protection.
At least every spring, flush these materials from the underbody with plain water. Clean any areas where mud
and other debris can collect. Dirt packed in closed areas
of the frame should be loosened before being flushed.
Your dealer or an underbody car washing system can do
this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create
a chemical fallout. Airborne pollutants can fall upon
and attack painted surfaces on your vehicle.
This
damage can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched
into the paint surface.
Although no defect in the paint job causes
this, Pontiac
will repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 OOO km) of purchase,
whichever occurs
first.
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